Lengthen Your Product's Life Cycle

No service can afford to do the same old things year after year,
though sometimes this innovation amounts to just a change in
terminology. For manufacturers, a new type of product--with high
demand and no competitors--will allow premium pricing. An old
war-horse--with established popularity, no start-up costs and no
requirement for ongoing promotion--will allow moderate pricing to
produce a steady profit stream (the much-admired "cash
cow"). This principle also applies to services or novel
wrinkles on established services to maintain interest and
prices.